What is the real name of matsumoto jun?

Answer 1

Japanese celebrities are known not to use their real name in what we call 'genoukai', so we cannot absolutely be affirmative of the fact that Matsumto Jun's name is his real one.

(ARASHI's Jun)

Answer 2

It is Matsumoto Jun. But his first name is Jun, and surname is Matsumoto, Japanese people write surname first. His real first name is Junnosuke, Jun is his nickname.